piclist 2001\01\02\085515a >
Thread: Sound Detector
face BY : mike@spam@@KILLspamwhitewing.co.uk

On Tue, 2 Jan 2001 11:51:55 -0000, you wrote:

{Quote hidden}

Not narrow, but spiky - white LEDs are blue LEDs with a phosphor to
convert some of the blue to yellowish, so the output spectrum can be
rather uneven.
..having said that, I've just shone a white LED at  reflective
diffraction grating (otherwise known as a CD!), and at the right angle
you do see most of the colours of the visible spectrum with no obvious
colour banding.
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<fth35tcfdmrs4720h6rdt0k2ov4se5n6b4@4ax.com> quoted-printable

In reply to: <0F60BEDDC090D41185D300508BCFA39E0AF95A@zpgty002.europe.nortel.com>
See also: www.piclist.com/techref/io/audio.htm?key=sound
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Subject (change) Sound Detector

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